Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/10502
Authors: Cannavò, F.* 
Nunnari, G.* 
Title: On a Possible Unified Scaling Law for Volcanic Eruption Durations
Issue Date: 2016
Series/Report no.: /6 (2016)
DOI: 10.1038/srep22289
URI: http://hdl.handle.net/2122/10502
Keywords: Eruption duration
Power law
Subject Classification05. General::05.01. Computational geophysics::05.01.04. Statistical analysis 
Abstract: Volcanoes constitute dissipative systems with many degrees of freedom. Their eruptions are the result of complex processes that involve interacting chemical-physical systems. At present, due to the complexity of involved phenomena and to the lack of precise measurements, both analytical and numerical models are unable to simultaneously include the main processes involved in eruptions thus making forecasts of volcanic dynamics rather unreliable. On the other hand, accurate forecasts of some eruption parameters, such as the duration, could be a key factor in natural hazard estimation and mitigation. Analyzing a large database with most of all the known volcanic eruptions, we have determined that the duration of eruptions seems to be described by a universal distribution which characterizes eruption duration dynamics. In particular, this paper presents a plausible global power-law distribution of durations of volcanic eruptions that holds worldwide for different volcanic environments. We also introduce a new, simple and realistic pipe model that can follow the same found empirical distribution. Since the proposed model belongs to the family of the self-organized systems it may support the hypothesis that simple mechanisms can lead naturally to the emergent complexity in volcanic behaviour.
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